import greenfoot.*;

/**
 * This class defines a crab. Crabs live on the beach.
 */
public class Crab extends Actor
{
    public void act()
    {
       move(3);
       turnAtEdge();
       control();
    }
    
    public void turnAtEdge(){
        if(isAtEdge() ==true){
            turn(15);
        }
    }
    
    public void control(){
        if(Greenfoot.isKeyDown("left")){
            turn(-15);
        }
        if(Greenfoot.isKeyDown("right")){
            turn(15);
        }
    }
}


